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  • Tube / Extrusions / Profile


AMS QQ-A-250/6 / AlMg4.5Mn0.7 / 5083 / H321

Chemical Properties % Value
Silicon (Si)0,00 - 0,40
Chromium (Cr)0,05 - 0,25
Magnesium (Mg)4,00 - 4,90
Copper (Cu)0,00 - 0,10
Titanium (Ti)0,00 - 0,15
Iron (Fe)0,00 - 0,40
Zinc (Zn)0,00 - 0,25
Aluminium (Al)Balance
Physical Properties Value
Density2.66 g/cm³
Melting Point574 °C
Thermal Expansion23.9 x 10^-6 /K
Modulus of Elasticity71 GPa
Thermal Conductivity120 W/m.K
Electrical Resistivity%29 IACS
Mechanical Properties Value
Proof Strength250 MPa
Yield Strength340 MPa
Elongation A50 mm%15
Modulus of Elasticity71 GPa
5083 retains good formability due to excellent ductility. It is highly suitable for welding and can be hardened by cold work. Because Alloy 5083 exhibits excellent resistance to general corrosion, it is used in marine, aerospace applications.


Aluminium alloy QQ-A-250/6, 5083 has s imilarities to the following standard designations and specifications ;

Alloy 5083, UNS A95083, ASTM B209

ISO AlMg4.5Mn, AMS 4059

BS N8, 3.3547, AlMg4.5Mn0.7
Alloy QQ-A-250/6, 5083 is supplied in a wide range of tempers:
  • O - Soft
  • H112 - Applies to alloys that acquire some temper from shaping processes which do not have special control over the amount of strain-hardening or thermal treatment, but for which there are mechanical property limits.
  • H116 - Applies to aluminium-magnesium alloys with a magnesium content of 4% or more and for which mechanical property limits and exfoliation corrosion resistance are specified.
  • H32 - Work hardened by rolling then stabilised by low-temperature heat treatment to quarter hard
  • H321 - Applies to alloys which are strain-hardened less than the amount required for a controlled H32 temper


5083  is supplied in plate, sheet, bar and extrusions.
  • Plate
  • Sheet
  • Round Bar / Bar
  • Tube / Extrusions